For Sudoku Stars - Stimulate your brain with 200 Hard* Sudoku puzzles! * Alert - Hard Sudoku puzzles by Lou Gruden are more difficult than other "hard" puzzles in newspapers or in most other Sudoku books. You will need to solve these puzzles using advanced logic techniques for: 20 X-Wing Puzzles 70 XY-Wing Puzzles 20 XYZ-Wing Puzzles 70 XY-Chain Puzzles 20 Coloring Puzzles Keep this large-print 8.5" x 11" book next to your favorite thinking chair or tear out a page to take with you on the go. 200 Puzzles ...
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For Sudoku Stars - Stimulate your brain with 200 Hard* Sudoku puzzles! * Alert - Hard Sudoku puzzles by Lou Gruden are more difficult than other "hard" puzzles in newspapers or in most other Sudoku books. You will need to solve these puzzles using advanced logic techniques for: 20 X-Wing Puzzles 70 XY-Wing Puzzles 20 XYZ-Wing Puzzles 70 XY-Chain Puzzles 20 Coloring Puzzles Keep this large-print 8.5" x 11" book next to your favorite thinking chair or tear out a page to take with you on the go. 200 Puzzles require the use of one advanced logic technique. Trial and error is NOT required. Two big puzzles on each page give you plenty of space to note candidates and sturdy paper holds up well to erasing. Extra wide center margins make it easier to solve the puzzles when you fold the book back. Large print on white paper is very easy to read (even in dim light). Each puzzle has one solution provided at the back of the book. Feel free to peek if you get stuck or want to verify your answer. To help you confidently select puzzles at the level you want, Puzzle Books Plus is committed to using a consistent grading standard for our Sudoku books. We determine difficulty by the logic techniques needed to solve the puzzle. Use the Look Inside feature to see the logic techniques used for Hard Sudoku see a sample of the puzzles.
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